Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
Limited mileage data: 27 of 149 reports include usable mileage. There isn’t enough coverage to show a useful chart.
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
Electrical System. Review the 38 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Engine. Review the 29 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
Fuel/propulsion System. Review the 24 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
7 crash reports0 fire reports3 injury reports
What owners actually said
149 reports
Mileage unknown · Nov 25, 2025
Engine
VEHICLE'S ENGINE INCURRED COOLANT TEMPERATURE ISSUES, SET DTC CODE, AND COOLING FAN RAN AFTER ENGINE WAS TURNED OFF. DEALER DIAGNOSED AS THERMOSTAT FAILURE AND COMPLETED REPAIRS. DEALER CHECKED AND FOUND NO SERVICE ASSISTANCE FOR REPAIR EVEN THOUGH THERE WAS A BACK ORDER FOR REPLACEMENT PARTS AND WAS SECURED THROUGH DEALER IN DE…
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VEHICLE'S ENGINE INCURRED COOLANT TEMPERATURE ISSUES, SET DTC CODE, AND COOLING FAN RAN AFTER ENGINE WAS TURNED OFF. DEALER DIAGNOSED AS THERMOSTAT FAILURE AND COMPLETED REPAIRS. DEALER CHECKED AND FOUND NO SERVICE ASSISTANCE FOR REPAIR EVEN THOUGH THERE WAS A BACK ORDER FOR REPLACEMENT PARTS AND WAS SECURED THROUGH DEALER IN DETROIT CURRENT NHTSA ID NUMBER 110243390 / MFG COMMUNICATION # N252508350 REFERRING TO 3.6 V-6 ENGINE. GMC DECLINED ANY MONETARY ASSISTANCE TOWARDS REPAIRS WITH 76278 MILES I ALSO OWN A 2020 CHEVROLET BLAZER WITH A 3.6 V-6 ENGINE THAT EXPERIENCED SAME FAILURE PAID $400 DEDUCTABLE TOWARD REPAIR
NHTSA ODI #11701422
Mileage unknown · Nov 24, 2025
Unknown Or Other
Getting a pop up that says “steering assist reduced”. Temp gauge drops completely. AC won’t work and fan kicks on
NHTSA ODI #11701260
Mileage unknown · Nov 24, 2025
SteeringUnknown Or Other
"STEERING ASSIST REDUCED. DRIVE WITH CARE" message, fan runs nonstop, even after the vehicle is off. Sounds like a plane taking off. This seems to be EXTREMELY common after doing my research. Please consider turning this into a recall!
NHTSA ODI #11701250
Mileage unknown · Nov 24, 2025
EngineSteeringVehicle Speed Control
For the 3rd time of ownership the cooling fan stays on after vehicle is turned off and the display “steering assist is reduced, drive with caution”.
NHTSA ODI #11701173
Mileage unknown · Nov 23, 2025
EnginePower TrainSteering
The thermostat failed which cause the steering system to fail and car to not read temperature
NHTSA ODI #11701121
36,970 miles · Nov 19, 2025
EngineFuel System, Gasoline
The contact owns a 2021 GMC Acadia. The contact stated that while his wife was driving at an undisclosed speed, the vehicle inadvertently lost motive power. The driver was able to coast to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to an…
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The contact owns a 2021 GMC Acadia. The contact stated that while his wife was driving at an undisclosed speed, the vehicle inadvertently lost motive power. The driver was able to coast to the shoulder of the roadway, where the vehicle failed to restart. The check engine warning light was illuminated. The vehicle was towed to an independent mechanic, who diagnosed a failure with the fuel pump control module. The vehicle was repaired. The manufacturer was notified of the failure but provided no assistance. The failure mileage was 36,970.
NHTSA ODI #11700332
Mileage unknown · Nov 17, 2025
Engine
GM need to be looked at for faulty Thermostats being put into vehicles. While driving the message "steering assist is reduced " You get to a safe place and shut you car off and the fan still runs. After speaking with my dealer today, he said he has done 7 in last week. And if you look online, everyone especially Aca…
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GM need to be looked at for faulty Thermostats being put into vehicles. While driving the message "steering assist is reduced " You get to a safe place and shut you car off and the fan still runs. After speaking with my dealer today, he said he has done 7 in last week. And if you look online, everyone especially Acadia models is having this problem. Customers are getting charged alot of money for the repair. To me this is a defective thermostat on GM and needs to be addressed
NHTSA ODI #11699969
Mileage unknown · Nov 16, 2025
Service Brakes
ABS Modulator failed leaking oil. Loss of braking Repair service found the same problem. Part was scrapped.
NHTSA ODI #11699678
Mileage unknown · Nov 13, 2025
Electrical SystemSteering
Often times, on the heads-up display I would get "Steering Assist is Reduced Drive with Care" and my temp gauge will stop working and when I stop, my fan continues to run until I disconnect the battery for 20 secs.
NHTSA ODI #11699159
35,500 miles · Nov 7, 2025
Fuel System, Gasoline
The contact owns a 2021 GMC Acadia. The contact stated while driving 75 MPH, the check engine warning light illuminated. Additionally, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road. The contact stated while attempting to start the vehicle…
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The contact owns a 2021 GMC Acadia. The contact stated while driving 75 MPH, the check engine warning light illuminated. Additionally, the accelerator pedal was depressed, but the vehicle failed to accelerate as intended. The vehicle was driven to the shoulder of the road. The contact stated while attempting to start the vehicle, the vehicle failed to start as intended. The contact stated that the failure had nearly caused the vehicle to be run over by a tractor trailer. The contact's wife and three minor children were also occupying the vehicle during the failure. The contact stated that he and his family could have been killed due to the failure. The vehicle was towed to the dealer, where it was diagnosed with fuel pump power control module failure. The contact was informed that the fuel pump power control module needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and a case was filed. The contact related the failure to an unknown recall; however, the VIN was not included in the recall. The failure mileage was approximately 35,500.
General Motors, LLC (GM) is recalling certain 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles equipped with the optional Surround Vision feature. The rearview camera coaxial cable connectors may have been crimped improperly, causing the rearview camera to fail or function intermittently.
Consequence & remedy
Consequence: An inoperative rearview camera can reduce the driver's rear visibility, increasing the risk of a crash.
Remedy: Dealers will replace the coaxial cables, free of charge. Owner notification letters were mailed January 18, 2023. Owners may contact Cadillac customer service at 1-800-458-8006 or GMC customer service at 1-800-462-8782. GM's number for this recall is N222378380.
General Motors, LLC. (GM) is recalling certain 2021 Cadillac XT5, XT6, and GMC Acadia vehicles. The fuel supply lines may be improperly attached and seated.
Consequence & remedy
Consequence: Improperly attached and seated fuel supply lines may loosen or separate, causing a fuel leak and increasing the risk of a fire.
Remedy: Dealers will inspect and replace fuel supply lines as necessary, free of charge. Owner notification letters were mailed on July 1, 2021. Owners may contact Cadillac customer service at 1-800-458-8006 and GMC customer service at 1-800-462-8782. GM's number for this recall is N212335590.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
1
PE22006 · Rear-View Camera Failure
Opened Jul 22, 2022 · Closed Nov 21, 2022
Status: closed (inferred from source dates) · Back Over Prevention: Sensing System: Camera
On July 22, 2022, the Office of Defects Investigation (ODI) opened a Preliminary Evaluation (PE22-006) to assess alleged failures of the rear-view camera (RVC) in Model Year (MY) 2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles. The complaints report that the screen for the RVC is black, sometimes with a red triangle and a circle with a line through it. To date, ODI has received a total of 18 complaints and several EWR Field Reports with allegations of the RVC image failing to display when the vehicle is in reverse. The reports have been received over the past 28 months with most occurring with low vehicle mileage.During the investigation, ODI learned incorrect crimping specifications were utilized in the production of the coaxial cable connector. Improper crimping leads to loss of connection between the RVC and dashboard screen that results in failure of the RVC image to display. Failure or malfunction of the RVC image to display results in reduced visibility of the area behind the vehicle. This limited view may lead to an increased risk of incidents resulting in injury and/or property damage while the vehicle is in reverse.The improperly crimped connectors were only present on subject vehicles equipped with the optional RVC surround vision feature (UV2). Vehicles not equipped with the optional RVC surround vision feature were not affected by this failure. On September 28, 2022, General Motors (GM) filed a defect information report (NHTSA number 22V-709) recalling certain MY2020-2021 Cadillac XT5, XT6, and GMC Acadia vehicles equipped with the optional RVC surround vision feature (UV2). GM will replace the coaxial cables with properly crimped connectors.In view of the recall action being taken by GM, ODI is closing this preliminary evaluation. NHTSA reserves the right to take additional action if warranted by future circumstances. The ODI complaints cited above can be viewed at www.nhtsa.gov. The ODI identification numbers for the complaints cited above can be found below: 11343838, 11390254, 11406709, 11415261, 11415501, 11425365, 11429267, 11431846, 11446363, 11463278, 11463901, 11471702, 11475437, 11476809, 11477176, 11481806, 11484360, and 11484360.
2021 GMC Acadia Problems, Complaints & Recalls | Skip That Year
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